Unidentified Marine Water-Jacketed Manifold / Heat Exchanger Housing - Used

Application: Unidentified marine water-jacketed housing — likely a fabricated exhaust manifold cover, heat exchanger shell, or custom water reservoir off an inline-4 marine diesel or gas engine. No OEM part number or data plate visible. Condition: Used, sold as-is. Heavy paint loss, surface corrosion, and old gasket/sealant residue present. Not pressure tested; internal condition unknown. Will be drained and ports capped before shipping. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.